Definitions Flashcards
Last common ancestor:
Precursor that was neither prokaryotic nor eukaryotic but gave rise to both.
Endosymbiosis:
Larger cell engulfs a smaller cell and the smaller cells thrive. (How organelles were made)
Mycoses:
Fungal infection; mycoses is opportunistic
Sporangiospores, sporangium, and sporangiophore. Sexual or asexual?
Sporangiospores formed by cleavages within the sac-like sporangium which is connected to a stalk, sporangiophore. Asexual.
Conidispores, or conidia:
Free spores not in a sac. Comes from segmentation or pinching off from hypha.
Fragmentation:
Piece of mycelium can produce a new colony.
Mycelium:
Woven mass of hyphae.
Mycorrhizae:
Organism that forms a mutually beneficial relationship w/plant roots where it increases absorption
Saccharomyces:
Yeast that makes alcohol and causes dough to rise.
Cilia:
Similar to flagella but shorter and more numerous. Make oar-like motion.
Extracellular matrix (glycocalyx):
Slime layer, capsule, or network of fibers. Function: Protection, adherence, and reception of signals.
Nuclear envelope, nuclear pores:
Envelope encloses the nucleus which has nuclear pores (Macromolecules travel thru here).
Nucleolus:
Dense, granular region in nucleoplasm. Site of ribosomal RNA synthesis.
Chromatin:
DNA in resting phase wound around histone proteins. Will turn into chromosomes in cell division.
Actin filaments:
Long thin protein strands that cause cellular movement
